CVE-2026-54311
HighCVSS 7.7Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
n8n is an open source workflow automation platform. Prior to versions 2.25.7 and 2.26.2, an authenticated user with permission to create or modify workflows could pollute the sandbox used by the Merge node's SQL Query mode.
Risk Assessment
Due to the caching of the sandbox context, prototype mutations introduced by one user can affect SQL query executions in other workflows, allowing a low-privileged attacker to intercept workflow data processed by other users.
Recommendation
It is recommended to update n8n to versions 2.25.7 or 2.26.2 to mitigate this vulnerability. Additionally, user permissions for creating and executing workflows containing the Merge node in SQL Query mode should be restricted.
Other vulnerabilities in n8n workflow automation platform
See all- CVE-2026-42234High
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an authenticated user with permission to create or modify workflows containing a Python Code Node could escape the sandbox and achieve arbitrary code execution on the task runner container.
- CVE-2026-54307Critical
In n8n before versions 1.123.55, 2.25.7, and 2.26.2, a member-level user with editor access to a shared workflow could reference credentials they do not own via specific public API endpoints. Credential ownership checks were only enforced partially leading to cross-user credential access.
- CVE-2026-44791Critical
n8n is an open source workflow automation platform. Prior to versions 1.123.43, 2.22.1, and 2.20.7, an authenticated user with permission to create or modify workflows could bypass the patch for CVE-2026-42232 in the XML node, potentially leading to RCE on the n8n host.
- CVE-2026-44789Critical
n8n is an open source workflow automation platform. Prior to versions 1.123.43, 2.22.1, and 2.20.7, an authenticated user with permission to create or modify workflows could achieve global prototype pollution via an unvalidated pagination parameter in the HTTP Request node.
- CVE-2026-54310Critical
n8n is an open source workflow automation platform. Prior to versions 2.25.7 and 2.26.2, an authenticated user with permission to create or modify workflows could supply crafted parameters to the TimescaleDB and/or legacy Postgres v1 node, allowing arbitrary SQL to be injected and executed against the connected database within the privileges of the configured database account.
- CVE-2026-44790High
n8n is an open source workflow automation platform. Prior to versions 1.123.43, 2.22.1, and 2.20.7, an authenticated user with permission to create or modify workflows could inject CLI flags on the Git node's Push operation, allowing an attacker to read arbitrary files from the n8n server potentially leading to full compromise.
Original NVD description (English source)
n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, an authenticated user with permission to create or modify workflows could pollute the sandbox used by the Merge node's SQL Query mode. Because the sandbox context was cached and reused across all workflow executions on the instance, prototype mutations introduced by one user's workflow persist into subsequent Merge SQL executions belonging to other users or projects. This allowed a low-privileged attacker to intercept workflow data processed by other users on the same instance. This issue only affects multi-user n8n instances where more than one user has permission to create and execute workflows containing the Merge node in SQL Query mode. This vulnerability is fixed in 2.25.7 and 2.26.2.